So how does Golden Boy Promotions president Oscar De La Hoya, who is promoting the Mayweather-Marquez card, feel about going head-to-head with the UFC?

"We have no problem with that," De La Hoya said after a rally for Marquez on Sunday afternoon on Olvera Street. "Look, we have different audiences. We have our own marketing plan. They have their own marketing plan. We're almost sold out. I don't know about them, but ... look, we have the 24/7 thing (on HBO) and tremendous sponsors behind us. They have great sponsors behind them. We're in our own worlds. Let them do great, we're gonna do great and everybody wins."

De La Hoya said he isn't worried about the UFC putting on events, the same nights he is promoting his boxing events in the future.

"If they want to choose to do something like that to us, it's OK," De La Hoya said. "What am I gonna do? I'm not gonna cry about it. All it's going to do is make us put out better fights. It's going to make us better. It's gonna make us stay on our toes. I'm glad the UFC has been doing such a great wonderful job, because it keeps us aware of the potential that boxing has."

The UFC's influence is one of the reasons De La Hoya said he loaded up the Mayweather-Marquez undercard with two world title fights. Vicente Escobedo and Michael Katsidis will fight for the interim WBO lightweight title and Chris John defends his WBA featherweight title in a rematch with Rocky Juarez on the Mayweather-Marquez undercard.

"The reason why we put the great undercard is because I told everybody at Golden Boy we have to put on the best fights and start the tradition again the way Don King had his fights loaded up back in the (Julio Cesar) Chavez days," De La Hoya said. "That's how we can be the premier promoter in the world by far. From now on, every single event is going to be loaded with the best fights possible."

So what about the Mayweather-Marquez fight? How does De La Hoya see it playing out?

"Look, styles make fights," De La Hoya said. "Marquez has the best style to beat Mayweather, because he's smart. He's a counter-puncher, but he can also attack, and he hits hard. He's big. Look at the guy. I saw him in Mexico and he hits hard, and he's fast. So it's going to be a tough fight. Mayweather is going to be a tough fight, but styles make fights. That's my opinion."

De La Hoya believes Marquez will be the toughest test in Mayweather's career.